1. Define petrochemicals :
A petrochemical is a chemical which has been derived from petroleum or natural gas.
2. Where they come from :
Petrochemicals come from crude oil.
3. What is the refinement process( Fractional distillation )
The refining process starts with fractional distillation,which separates the components of crude oil.
4. How does it get into the environment ?
Leaks and spills.
5.What happens once in the environment?
It can cause global warming and kill many plants and animals.